Improvement in fruit-jars



UNITED STATES PAT ` JOHN SOHAFFER, OF ROCHESTER, NEW YORK, ASSIGNOR OFONE-THIRD HIS RIGHT TO FREDRIOK G. ZUGELDER, OF SAME PLAGE.

IMPROVEMENT IN FRUIT-JARS.

Specification forming part ofLetters Patent No. 186,629, dated January23,1877; application tiled December 6, 1876.

To all whom it may concern Be it known that I, JOHN T. SGHAFFER, ofRochester, in the county of Monroe and State of New York, have inventeda new and useful Improvement in Fruit-Jars, which ini-v provement isfully set forth in the following specification and accompanying drawing,in which- Figure l is a side elevation of a fruit-jar; with myimprovement attached; Fig. 2, a top view of the same; Fig. 3, a vertical'section; and Fig. 4, an auxiliary figure, explained farther on.

The object of my invention is to furnish a device for holding the coverof a fruit-jar upon the mouth of the same, mainly by means of a metallicclamp pivoted centrally to a ring provided with inclined surfaces, bymeans of which the clamp is tightened upon the jar. Notches in the ring,engaging the clamp,'hold it from/slipping out of place. y,

In the drawing, A is the body of an ordinarily-formed fruit-jar, ofwhich C is the' cover, the opposing portions of both being grcoved toreceive the sealing-ring ct. (More clearly shown in Fig. 3.) The clamp Band ring 1' are connected at their centers by the pivotingpin lo, and,when placed in position, the said ring rests centrally upon the cover,while the ends of the clamp reach downward and grasp the beadsurrounding the mouth of the jar. as shown in Fig. 1. The upper side ofthe ring is composed of two corresponding inclined surfaces, situateddiametrically opposite; and it will be understood that when the clamp isswung so as to ride upward on these surfaces the cover will be presseddown upon the interposed sealing-ring a, and when swung in the oppositedirection it will be loosened,

and, with the ring 7', may be slid laterally o' the jar. f

For tightening the clamp, I sometimes use a wrench to turn the ring,instead of the clamp, and for this purpose I form lugs c in the glass,to hold the clamp from turning when the wrench is applied.

The inclined surface of the ring r I provide with notches s, Figs. 2 and4, which prevent the clamp slipping from its position when strained uponthejar.

The cover is provided centrally, at its upper surface, with a conicaldepression. c, Fig. 3, in which rests the foot of the pin p, by means ofwhich the ring 1' is kept centrally upon the cover. There is sufticientlength between the shoulders ofthe pin to allow the clamp to rise as itis moved up the inclines of the ring.

The india-rubber sealing-ring t is designed to be molded, and may be ofvarious forms of cross-section-i. e., round, square, Svc.; but I preferthe form shown at a, Fig. 3, provided with slight lateral projections.

I claimas my invention- 1. In a fruit-jar fastening, a double-inclinedseparate ring, 1', provided with notches s, substantially as shown anddescribed, in combination with a clamp, B, and pivoting-pin p, for thepurpose set forth.

2. A cover, C. provided centrally, at its 'outside surface, with theconical depression e, for the purpose of receiving the' foot ofv thecentering-pin p, in combination with said pin, separate ring lr, andclamp B, substantially as shown and described.

3. The lugs c, in combination with the jar A, clamp B, anddouble-inclined notched separate ring r, substantially as and for thepurpose set forth.

JOHN T. SGHAFFER.

Witnesses:

E. B. WEITMORE, J. S. GARLocK.

OFFICE.

